In an announcement Monday, Middlesex Attorney Marian Ryan and Malden Police Chief Kevin Molis said they were once again appealing to the public in identifying the suspects.

"Authorities have made some progress, but no one has been charged in connection with the incident at this time," the announcement said.

The images, released by the Middlesex County District Attorney' office, show two men wearing black pants, hooded sweatshirts with dark-colored jackets over them and latex gloves enter the store. One of the men points a handgun at someone behind the counter, who is not visible. The images were captured by multiple security cameras inside the shop.

One suspect is described as 6 feet tall, the other 5 foot 10 inches to 6 feet tall, the statement said.

Police are asking that anyone with information call Massachusetts State Police at 781-897-6600 or Malden Police at (781) 397-7171.